Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-10-11
2010-11-16
Kim, Paul D (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S609000, C029S609100, C257S704000, C257S723000, C257S724000, C257S729000, C257S730000, C381S170000, C381S313000, C381S355000, C381S356000, C381S358000
Reexamination Certificate
active
07832080
ABSTRACT:
A directional microphone assembly for a hearing aid, and methods of assembling a directional microphone, are provided. The hearing aid has one or more microphone cartridge(s), and first and second sound passages. Inlets to the sound passages, or the sound passages themselves, are spaced apart such that the shortest distance between them is less than or approximately equal to the length of the microphone cartridge(s). A sound duct and at least one surface of a microphone cartridge may form each sound passage, where the sound duct is mounted with the microphone cartridge. Alternatively, each sound duct may be formed as an integral part of a microphone cartridge.
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Drambarean Viorel
French John S.
Haapapuro Andrew J.
Killion Mead C.
Monroe Timothy S.
Etymotic Research Inc.
Kim Paul D
McAndrews Held & Malloy Ltd.
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